Kill Dry refers to how the mix parameters of the Programs/Presets works; it removes the dry signal. It sounds like what you are describing is a Wet/Dry configuration: https://cdn.eventideaudio.com/manuals/h90/1.7.5/content/setup/wet-dry.html
The H90 can be used in a wet/dry setup (as seen above) or a typical stereo setup as you are doing already. It cannot do both. Sorry, I’m not sure if we will consider this request since both setups can already be accomplished.
